WBJEE Question Paper Answers 2011 Engineering and Medical.
West Bengal Joint Entrance Exam (WBJEE) 2011 examination is the procedure to get the Admission to West Bengal Engineering and Medical Colleges for admission to Professional Degree Courses
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WBJEE Question Paper Answers 2011 Engineering and Medical
;;rhicli one of the following is not true at room temperature and pressure
(A) P4010 is a white solid (B) SO2 is a coloureless gas (C) SO. is a colourless gas (D) NO, is a brown gas
Hints : 503 is colorless, crystalline transparent solid at room temperature.
An electric current is passed through an aqueous solution of a mixture of alanine (isoelectric point 6.0) glutamic acid (3.2) and
arginine (10.7) buffered at pH 6. What is the fate of the three acids
(A) Glutamic acid nügrates to anode atpH 6. ArginineTpresent as a cation and migrates to the cathode. Alanine in a dipolar ion remains uniformly distributed in solution.
(B) Glutamic acid migrates to cathode and others remain uniformly distributed in solution.
(C’) All three remain uniformly distributed in solution.
D) All three move to cathode
Ans : (A)
Hints: At pH = 6. glutamic acid exists as a dianionic species & migrates to anode while arginine exists as cationic species & moves to cathode. Alanine does not migrate to any electrode at its isoelectric point.